Mr. Nguyen Van Huong, Head of Weather Forecast Department, National Center for Hydro-Meteorological Forecasting, said that on the first day of August 2025, the heat wave in the North basically ended, and the low pressure trough caused widespread rain in this area.
On August 2, 3, and 4, this low pressure trough is likely to weaken, and hot weather may return to the North. Thunderstorms are forecasted to recur in this area on August 4-5.
"During August 7-8, the North is likely to experience widespread heat waves again. The heat waves will be concentrated in the entire North as well as the provinces of Thanh Hoa, Nghe An, and Ha Tinh ." Mr. Huong informed.
Since yesterday evening, July 30, thunderstorms have recurred in the North, and temperatures in this area have tended to decrease gradually (Illustration: Thanh Vinh)
The National Center for Hydro-Meteorological Forecasting has issued a warning bulletin for thunderstorms and localized heavy rain in the North. Accordingly, on the day and night of July 31, the area will have scattered showers and thunderstorms, locally heavy to very heavy rain with rainfall of 20-40mm, some places over 100mm, rain concentrated in the afternoon and night.
According to the Head of the Weather Forecast Department, the cause of the thunderstorms is a low pressure trough operating in the area of 1,500-3,000m, then gradually increasing in altitude to 5,000m.
With such increasing altitude, convection will become more active. The meteorological agency assessed that thunderstorms will occur more in the evening and at night.
"After a period of hot weather in the North, there is a possibility of extreme weather phenomena such as tornadoes, lightning, hail and strong gusts of wind in thunderstorms.
In addition, thunderstorms will also occur at sea. Activities at sea should also pay attention to tornadoes in the coming time, especially in the Gulf of Tonkin area," Mr. Nguyen Van Huong warned.
In addition, the National Center for Hydro-Meteorological Forecasting also warned of the risk of flash floods on small rivers and streams, landslides on steep slopes in Dien Bien and Son La provinces in the coming hours when rain continues to fall, especially in the following communes/wards:
Dien Bien: Chieng Sinh, Muong Mun, Pu Nhung, Bung Lao, Muong Ang, Muong Cha, Muong Lan, Muong Phang, Muong Pon, Muong Tung, Na Sang, Na Son, Na Tau, Nam Nen, Pu Nhi, Quai To, Si Pa Phin, Thanh An, Tua Chua, Tuan Giao, Xa Dung.
Son La: Binh Thuan , Bo Sinh, Co Ma, Long He, Muong Bam, Quynh Nhai.
Source: https://baolangson.vn/chuyen-gia-ly-giai-nguyen-nhan-mua-dong-tro-lai-nang-nong-dieu-dan-o-mien-bac-5054755.html
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